PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/10/02-10:27:50
G01     92.2           31.2                6.9 +/-    1.06      11.8 +/-    1.06  0.040 / 0.060
G07     124.0          45.2                7.3 +/-    1.96       9.8 +/-    1.96  0.040 / 0.050
G11     69.9           38.9                4.9 +/-    0.57       7.3 +/-    0.57  0.040 / 0.070
G13     298.6          34.0                6.2 +/-    0.96      10.1 +/-    0.96  0.030 / 0.050
G17     212.8          54.2                9.1 +/-    0.95      10.9 +/-    0.95  0.040 / 0.050
G19     213.6          27.0                6.5 +/-    1.22      12.2 +/-    1.22  0.040 / 0.050
G28     346.5          61.7                5.0 +/-    0.61       5.6 +/-    0.61  0.080 / 0.140
G30     92.5           78.0                5.9 +/-    0.31       6.0 +/-    0.31  0.080 / 0.110