PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/15-16:43:00
G01     252.3          36.5                9.4 +/-    1.48      14.6 +/-    1.48  0.060 / 0.090
G03     316.4          44.3                7.9 +/-    1.42      10.7 +/-    1.42  0.070 / 0.090
G11     237.1          12.3                8.8 +/-    3.16      23.3 +/-    3.16  0.110 / 0.290
G14     59.2           41.0                7.3 +/-    1.50      10.5 +/-    1.50  0.300 / 0.300
G18     218.0          27.3                9.9 +/-    2.24      18.3 +/-    2.24  0.080 / 0.120
G22     305.2          66.7                8.1 +/-    0.61       8.8 +/-    0.61  0.080 / 0.150
G23     284.9          17.2                3.8 +/-   10.26       8.9 +/-   10.26  0.210 / 0.230
G26     144.4          34.5                8.0 +/-    1.24      12.8 +/-    1.24  0.090 / 0.280
G31     41.4           63.9                6.1 +/-    0.44       6.7 +/-    0.44  0.090 / 0.090
G32     74.4           26.4                5.7 +/-    2.61      10.8 +/-    2.61  0.060 / 0.110