PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-17:43:10
G01     107.7          25.3               13.0 +/-    0.49      25.3 +/-    0.49  0.060 / 0.160
G07     105.7          59.1               15.3 +/-    0.41      17.5 +/-    0.41  0.080 / 0.160
G08     42.2           22.5               11.2 +/-    1.61      23.1 +/-    1.61  0.030 / 0.040
G09     174.9          14.1               17.6 +/-    1.95      44.8 +/-    1.95  0.030 / 0.040
G11     90.7           43.0               14.0 +/-    0.52      19.4 +/-    0.52  0.030 / 0.030
G13     310.2          28.2               13.3 +/-    1.66      24.2 +/-    1.66  0.040 / 0.030
G17     206.3          34.7               17.1 +/-    2.64      27.3 +/-    2.64  0.040 / 0.060
G18     81.3           24.3               12.4 +/-    1.22      24.7 +/-    1.22  0.060 / 0.050
G28     317.0          60.9               13.6 +/-    0.59      15.4 +/-    0.59  0.080 / 0.110
G30     23.6           77.9               16.1 +/-    0.56      16.4 +/-    0.56  0.060 / 0.110