PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/08/10-14:57:40
G01     62.8           31.1                9.4 +/-    0.60      16.0 +/-    0.60  0.060 / 0.140
G06     180.8          12.8               11.4 +/-    2.64      29.9 +/-    2.64  0.080 / 0.140
G07     140.7          21.7                9.8 +/-    1.10      20.6 +/-    1.10  0.030 / 0.050
G11     48.7           23.1                7.7 +/-    1.76      15.8 +/-    1.76  0.030 / 0.040
G13     268.2          35.6               12.0 +/-    1.34      18.8 +/-    1.34  0.060 / 0.090
G17     255.4          77.2               11.3 +/-    0.42      11.5 +/-    0.42  0.050 / 0.100
G19     230.4          50.5               14.3 +/-    0.56      17.9 +/-    0.56  0.050 / 0.140
G28     31.6           57.3                9.4 +/-    1.02      10.9 +/-    1.02  0.050 / 0.120
G30     141.2          57.3               11.5 +/-    0.94      13.4 +/-    0.94  0.020 / 0.030