PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/03-11:12:40
G01     65.1           31.8                4.6 +/-    0.60       7.8 +/-    0.60  0.120 / 0.390
G07     139.9          24.7                6.1 +/-    1.33      12.0 +/-    1.33  0.100 / 0.390
G11     50.2           25.6                4.3 +/-    0.66       8.3 +/-    0.66  0.040 / 0.140
G13     270.7          36.1                7.5 +/-    1.50      11.7 +/-    1.50  0.050 / 0.120
G15     299.1          15.9                3.3 +/-    1.61       8.0 +/-    1.61  0.030 / 0.040
G17     247.9          75.5                7.2 +/-    0.60       7.4 +/-    0.60  0.030 / 0.060
G19     228.5          48.4                7.7 +/-    0.87       9.9 +/-    0.87  0.050 / 0.080
G28     28.9           57.8                3.0 +/-    0.57       3.5 +/-    0.57  0.050 / 0.090
G30     139.6          58.0                6.7 +/-    0.54       7.8 +/-    0.54  0.030 / 0.030