PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/09/28-07:58:00
G07     328.4          56.2                6.2 +/-    1.18       7.3 +/-    1.18  0.040 / 0.050
G08     104.6          49.8               11.8 +/-    0.64      15.0 +/-    0.64  0.050 / 0.060
G09     194.5          77.8                8.9 +/-    0.62       9.1 +/-    0.62  0.080 / 0.200
G11     147.6          9.9                -6.7 +/-   11.19     -18.7 +/-   11.19  0.070 / 0.210
G16     44.8           14.7                4.3 +/-    2.01      10.7 +/-    2.01  0.030 / 0.030
G23     154.0          49.1               11.7 +/-    0.61      14.9 +/-    0.61  0.030 / 0.040
G27     59.3           33.2                5.7 +/-    0.67       9.4 +/-    0.67  0.160 / 0.460
G28     233.7          26.0                8.6 +/-    3.16      16.5 +/-    3.16  0.130 / 0.340
G30     297.2          30.7                6.5 +/-    1.14      11.3 +/-    1.14  0.050 / 0.070