PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/24-20:43:00
G01     85.0           32.8               13.9 +/-    0.63      22.9 +/-    0.63  0.080 / 0.280
G07     129.3          42.2               14.9 +/-    1.00      20.9 +/-    1.00  0.090 / 0.270
G11     65.3           38.9               11.8 +/-    0.57      17.5 +/-    0.57  0.060 / 0.120
G13     289.8          36.9               12.0 +/-    1.64      18.4 +/-    1.64  0.050 / 0.110
G15     312.2          11.8                8.5 +/-    2.10      22.9 +/-    2.10  0.040 / 0.090
G17     218.7          53.3               14.8 +/-    1.33      18.0 +/-    1.33  0.050 / 0.080
G18     59.9           23.1               10.8 +/-    1.15      22.2 +/-    1.15  0.050 / 0.060
G19     216.9          30.2               15.4 +/-    3.37      26.8 +/-    3.37  0.040 / 0.060
G28     358.4          61.3               12.1 +/-    1.04      13.6 +/-    1.04  0.030 / 0.060
G30     117.9          71.0               14.0 +/-    0.75      14.7 +/-    0.75  0.030 / 0.070