PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/09/23-10:42:50
G01     44.7           20.8                4.1 +/-    2.78       8.9 +/-    2.78  0.360 / 0.400
G06     175.2          31.1                6.1 +/-    0.96      10.5 +/-    0.96  0.320 / 0.400
G11     43.9           12.3                2.4 +/-    1.98       6.3 +/-    1.98  0.040 / 0.020
G13     243.5          27.9                6.7 +/-    1.96      12.2 +/-    1.96  0.030 / 0.030
G15     278.5          14.4                3.6 +/-    1.11       9.0 +/-    1.11  0.040 / 0.040
G17     330.6          77.0                6.6 +/-    0.60       6.8 +/-    0.60  0.040 / 0.030
G19     257.9          66.2                6.6 +/-    0.71       7.1 +/-    0.71  0.080 / 0.120
G24     318.6          11.2               -8.9 +/-   23.30     -24.1 +/-   23.30  0.100 / 0.110
G28     50.9           55.4                4.5 +/-    0.82       5.3 +/-    0.82  0.050 / 0.070
G30     152.6          37.6                6.2 +/-    0.54       9.4 +/-    0.54  0.050 / 0.060