PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/07-21:43:10
G01     38.3           11.3               10.8 +/-    4.53      29.2 +/-    4.53  0.090 / 0.130
G02     199.4          15.1               17.6 +/-    2.42      43.8 +/-    2.42  0.130 / 0.170
G06     172.5          47.1               13.3 +/-    0.78      17.4 +/-    0.78  0.030 / 0.040
G13     232.4          17.5               14.4 +/-    2.34      33.8 +/-    2.34  0.030 / 0.040
G17     5.6            67.5               10.6 +/-    0.70      11.4 +/-    0.70  0.040 / 0.060
G19     296.0          70.5               10.3 +/-    0.36      10.9 +/-    0.36  0.040 / 0.070
G24     313.8          24.8                9.8 +/-    1.84      19.3 +/-    1.84  0.060 / 0.070
G28     80.5           43.1               10.3 +/-    0.91      14.3 +/-    0.91  0.040 / 0.080
G30     155.8          19.9               12.9 +/-    1.22      28.5 +/-    1.22  0.160 / 0.220