PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/17-00:28:00
G10     244.8          21.6               17.5 +/-    3.29      37.1 +/-    3.29  0.040 / 0.060
G13     60.6           33.3               10.4 +/-    0.75      17.0 +/-    0.75  0.040 / 0.070
G15     105.5          58.1               13.2 +/-    0.44      15.2 +/-    0.44  0.050 / 0.130
G16     301.4          15.8                8.3 +/-    2.55      20.3 +/-    2.55  0.050 / 0.130
G20     254.3          32.1               12.2 +/-    0.81      20.5 +/-    0.81  0.120 / 0.570
G21     324.5          54.6               12.1 +/-    0.93      14.5 +/-    0.93  0.130 / 0.650
G26     273.2          18.3               13.6 +/-    1.24      31.3 +/-    1.24  0.030 / 0.040
G29     163.0          59.2               13.6 +/-    1.00      15.5 +/-    1.00  0.030 / 0.050