PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2017/12/13-05:43:00
G01     87.2           32.4                6.3 +/-    0.55      10.5 +/-    0.55  0.060 / 0.050
G07     127.7          42.8                8.6 +/-    1.10      11.9 +/-    1.10  0.050 / 0.070
G11     66.6           38.6                4.4 +/-    0.37       6.6 +/-    0.37  0.050 / 0.060
G13     293.1          35.8                5.0 +/-    1.02       7.9 +/-    1.02  0.040 / 0.060
G15     313.3          11.5                2.3 +/-    2.46       6.2 +/-    2.46  0.050 / 0.040
G17     216.6          57.1                7.7 +/-    0.67       9.0 +/-    0.67  0.050 / 0.050
G19     215.8          30.6                8.1 +/-    0.95      14.0 +/-    0.95  0.140 / 0.290
G28     355.6          61.4                5.0 +/-    1.08       5.6 +/-    1.08  0.080 / 0.250
G30     112.8          72.5                7.0 +/-    0.45       7.3 +/-    0.45  0.070 / 0.100