PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/28-08:12:50
G01     106.6          25.7                5.9 +/-    0.93      11.4 +/-    0.93  0.040 / 0.050
G07     108.0          56.6                4.4 +/-    0.56       5.1 +/-    0.56  0.040 / 0.060
G08     41.8           18.8                2.1 +/-    1.17       4.9 +/-    1.17  0.040 / 0.040
G09     174.4          12.9                6.0 +/-    3.13      15.7 +/-    3.13  0.030 / 0.040
G11     87.8           41.7                5.0 +/-    0.47       7.1 +/-    0.47  0.070 / 0.070
G13     310.6          27.4                2.9 +/-    1.46       5.3 +/-    1.46  0.050 / 0.060
G17     205.5          40.2                6.1 +/-    1.40       8.9 +/-    1.40  0.090 / 0.310
G19     209.0          14.7                2.3 +/-    1.38       5.7 +/-    1.38  0.100 / 0.260
G28     319.9          61.1                3.5 +/-    0.49       3.9 +/-    0.49  0.070 / 0.110
G30     24.3           77.9                4.6 +/-    0.72       4.7 +/-    0.72  0.080 / 0.140