PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-07:57:50
G07     328.4          56.2                6.7 +/-    0.54       7.9 +/-    0.54  0.040 / 0.060
G08     104.6          49.8               10.9 +/-    0.91      13.7 +/-    0.91  0.040 / 0.060
G09     194.5          77.8               10.4 +/-    0.71      10.6 +/-    0.71  0.050 / 0.050
G11     147.6          9.9                -4.8 +/-    9.86     -13.4 +/-    9.86  0.040 / 0.030
G16     44.8           14.7                3.0 +/-    2.10       7.5 +/-    2.10  0.200 / 0.110
G23     154.0          49.1               11.9 +/-    0.68      15.1 +/-    0.68  0.140 / 0.120
G27     59.3           33.2                6.1 +/-    1.59      10.1 +/-    1.59  0.040 / 0.050
G28     233.7          26.0                7.6 +/-    3.21      14.6 +/-    3.21  0.050 / 0.040
G30     297.2          30.7                8.7 +/-    1.59      15.0 +/-    1.59  0.150 / 0.200