PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/11/20-06:42:40
G01     45.1           21.1                3.3 +/-    2.99       7.0 +/-    2.99  0.060 / 0.060
G06     175.6          29.6                5.9 +/-    1.89      10.5 +/-    1.89  0.050 / 0.080
G11     44.4           14.9                3.3 +/-    1.80       8.3 +/-    1.80  0.130 / 0.270
G13     244.4          28.7                6.6 +/-    1.59      11.9 +/-    1.59  0.130 / 0.220
G15     277.0          15.2                3.8 +/-    2.29       9.5 +/-    2.29  0.050 / 0.070
G17     336.3          77.2                0.9 +/-    0.66       1.0 +/-    0.66  0.040 / 0.060
G19     255.5          65.8                8.1 +/-    0.68       8.8 +/-    0.68  0.020 / 0.030
G28     47.2           56.5                5.6 +/-    0.51       6.6 +/-    0.51  0.030 / 0.030
G30     152.8          40.5                8.1 +/-    0.57      11.7 +/-    0.57  0.050 / 0.040