PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/15-12:27:50
G01     259.4          39.4                8.5 +/-    1.65      12.5 +/-    1.65  0.080 / 0.100
G03     317.1          41.9                5.9 +/-    0.47       8.4 +/-    0.47  0.060 / 0.110
G11     242.5          15.5                4.9 +/-    2.15      11.9 +/-    2.15  0.060 / 0.080
G14     52.7           44.8                5.2 +/-    0.99       7.1 +/-    0.99  0.060 / 0.090
G18     224.1          32.6                6.3 +/-    1.26      10.4 +/-    1.26  0.060 / 0.070
G22     310.1          65.0                7.0 +/-    0.80       7.7 +/-    0.80  0.060 / 0.080
G25     45.1           13.1                3.5 +/-    3.70       9.1 +/-    3.70  0.060 / 0.000
G26     145.6          30.5              -29.0 +/-   19.02     -50.2 +/-   19.02  0.070 / 0.110
G31     45.4           67.2                5.0 +/-    0.56       5.4 +/-    0.56  0.040 / 0.030
G32     67.5           32.5                3.9 +/-    3.63       6.6 +/-    3.63  0.040 / 0.040