PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/28-18:42:50
G01     74.2           33.3               15.8 +/-    0.65      25.9 +/-    0.65  0.080 / 0.210
G07     135.7          34.0               18.0 +/-    1.14      29.2 +/-    1.14  0.080 / 0.220
G11     56.2           33.2               13.6 +/-    0.79      22.4 +/-    0.79  0.040 / 0.080
G13     278.2          37.7               17.7 +/-    0.80      26.8 +/-    0.80  0.050 / 0.090
G15     305.7          14.2               14.1 +/-    2.70      35.8 +/-    2.70  0.030 / 0.050
G17     228.2          63.7               20.2 +/-    1.10      22.3 +/-    1.10  0.030 / 0.040
G18     51.6           19.7               12.5 +/-    1.00      27.6 +/-    1.00  0.050 / 0.110
G19     222.2          37.6               20.7 +/-    1.59      31.4 +/-    1.59  0.060 / 0.130
G28     14.7           59.9               14.8 +/-    0.49      16.8 +/-    0.49  0.030 / 0.050
G30     132.2          64.1               18.8 +/-    0.69      20.7 +/-    0.69  0.030 / 0.040