PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/11-06:27:50
G01     43.0           19.1                3.1 +/-    1.27       7.0 +/-    1.27  0.080 / 0.080
G06     176.5          34.0                7.4 +/-    1.09      12.0 +/-    1.09  0.070 / 0.080
G13     240.4          24.7                5.5 +/-    1.42      10.9 +/-    1.42  0.090 / 0.180
G15     275.9          13.1                3.6 +/-    1.34       9.3 +/-    1.34  0.070 / 0.220
G17     1.3            71.8                6.2 +/-    0.46       6.5 +/-    0.46  0.170 / 0.310
G19     263.2          65.0                6.1 +/-    0.67       6.7 +/-    0.67  0.100 / 0.230
G24     316.2          20.3                3.7 +/-    2.51       8.0 +/-    2.51  0.050 / 0.090
G28     64.3           50.2                6.3 +/-    0.57       8.0 +/-    0.57  0.060 / 0.090
G30     154.0          32.7               10.4 +/-    0.82      17.2 +/-    0.82  0.080 / 0.150