PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/27-17:27:50
G01     50.9           26.1                8.9 +/-    2.30      16.9 +/-    2.30  0.100 / 0.400
G06     176.9          25.3               12.7 +/-    1.60      24.7 +/-    1.60  0.090 / 0.390
G07     146.0          13.6               12.0 +/-    2.91      30.8 +/-    2.91  0.040 / 0.050
G11     44.9           15.9                8.8 +/-    1.91      21.4 +/-    1.91  0.040 / 0.050
G13     251.5          30.9               10.0 +/-    3.01      17.2 +/-    3.01  0.130 / 0.310
G15     286.4          15.3                8.5 +/-    2.43      20.9 +/-    2.43  0.090 / 0.210
G17     303.1          78.4               11.1 +/-    0.52      11.3 +/-    0.52  0.030 / 0.020
G19     243.8          56.6               11.7 +/-    1.49      13.7 +/-    1.49  0.030 / 0.020
G28     51.0           53.3               10.7 +/-    0.95      13.0 +/-    0.95  0.050 / 0.050
G30     149.4          42.7               11.0 +/-    0.74      15.3 +/-    0.74  0.040 / 0.050