PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/22-00:42:40
G01     40.8           15.9                7.1 +/-    1.75      17.3 +/-    1.75  0.140 / 0.220
G06     175.5          39.4               11.7 +/-    0.91      17.1 +/-    0.91  0.190 / 0.290
G13     237.6          21.5               11.0 +/-    1.29      23.2 +/-    1.29  0.030 / 0.030
G15     269.7          12.1               11.0 +/-    1.81      29.2 +/-    1.81  0.030 / 0.030
G17     354.1          71.6                8.5 +/-    0.29       8.9 +/-    0.29  0.040 / 0.050
G19     279.5          69.2                8.6 +/-    0.62       9.1 +/-    0.62  0.050 / 0.050
G24     316.5          19.5                6.1 +/-    2.06      13.6 +/-    2.06  0.020 / 0.040
G28     73.2           46.1                8.5 +/-    1.63      11.3 +/-    1.63  0.040 / 0.030
G30     154.0          24.2               12.0 +/-    3.15      23.9 +/-    3.15  0.060 / 0.080