PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/31-18:27:50
G01     75.8           33.3               10.7 +/-    1.37      17.5 +/-    1.37  0.100 / 0.200
G07     134.9          35.2               12.3 +/-    1.19      19.4 +/-    1.19  0.090 / 0.200
G11     57.2           33.9               11.3 +/-    1.63      18.2 +/-    1.63  0.040 / 0.070
G13     279.8          37.8               13.1 +/-    2.06      19.7 +/-    2.06  0.060 / 0.090
G15     306.9          13.8               11.0 +/-    2.65      28.0 +/-    2.65  0.040 / 0.020
G17     226.6          62.7               13.5 +/-    1.12      15.0 +/-    1.12  0.030 / 0.030
G18     52.6           20.3               11.2 +/-    7.11      24.6 +/-    7.11  0.090 / 0.100
G19     221.3          36.4               14.0 +/-    1.40      21.7 +/-    1.40  0.080 / 0.110
G28     12.4           60.1               12.1 +/-    1.62      13.8 +/-    1.62  0.240 / 0.200
G30     130.6          65.4               12.6 +/-    0.43      13.7 +/-    0.43  0.240 / 0.310