PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/07/21-05:12:50
G01     282.4          42.5                7.1 +/-    3.26      10.0 +/-    3.26  0.050 / 0.040
G03     313.8          22.0                4.6 +/-    2.61       9.5 +/-    2.61  0.050 / 0.060
G10     123.5          22.9                5.6 +/-    0.94      11.4 +/-    0.94  0.070 / 0.060
G11     259.9          23.3                8.2 +/-    3.53      16.7 +/-    3.53  0.060 / 0.070
G14     30.3           56.3                4.8 +/-    1.10       5.6 +/-    1.10  0.040 / 0.070
G18     243.7          45.0                7.3 +/-    5.29       9.8 +/-    5.29  0.040 / 0.070
G22     314.7          43.0                4.9 +/-    0.61       6.8 +/-    0.61  0.110 / 0.150
G25     62.6           18.6                3.7 +/-    1.68       8.5 +/-    1.68  0.100 / 0.160
G31     89.4           78.6                5.5 +/-    0.57       5.6 +/-    0.57  0.110 / 0.130
G32     54.7           39.6                3.8 +/-    1.70       5.6 +/-    1.70  0.080 / 0.110