PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/26-21:28:10
G02     205.9          43.0               14.9 +/-    0.53      20.6 +/-    0.53  0.090 / 0.130
G06     135.8          76.8               13.2 +/-    0.60      13.5 +/-    0.60  0.120 / 0.160
G12     312.0          22.4               11.1 +/-    1.61      23.0 +/-    1.61  0.060 / 0.080
G17     40.9           45.8               10.8 +/-    1.10      14.4 +/-    1.10  0.080 / 0.090
G19     12.9           61.3               11.6 +/-    0.61      13.0 +/-    0.61  0.030 / 0.020
G24     288.1          41.3                7.8 +/-    1.93      11.1 +/-    1.93  0.030 / 0.020
G28     109.8          25.7               12.0 +/-    1.49      23.0 +/-    1.49  0.050 / 0.040