PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/02/09-09:43:10
G02     76.9           17.6                0.9 +/-   20.10       2.1 +/-   20.10  0.170 / 0.310
G05     45.0           40.9               -1.6 +/-   19.06      -2.3 +/-   19.06  0.100 / 0.290
G12     181.6          13.6                5.3 +/-    4.57      13.7 +/-    4.57  0.040 / 0.060
G13     111.1          28.4                4.1 +/-   20.34       7.5 +/-   20.34  0.030 / 0.050
G15     150.5          29.8                3.0 +/-   22.01       5.3 +/-   22.01  0.040 / 0.050
G20     234.3          76.2               -3.8 +/-   19.22      -3.9 +/-   19.22  0.040 / 0.040
G21     289.3          31.7               -1.3 +/-   21.59      -2.1 +/-   21.59  0.060 / 0.080
G25     216.4          35.1                0.9 +/-   19.91       1.4 +/-   19.91  0.050 / 0.120
G26     314.3          14.3               -0.8 +/-   21.03      -2.0 +/-   21.03  0.030 / 0.020
G29     348.6          77.0               -4.7 +/-   19.95      -4.8 +/-   19.95  0.020 / 0.020