PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/19-10:42:40
G01     321.1          10.5              -15.5 +/-   25.49     -42.9 +/-   25.49  0.040 / 0.060
G08     269.6          16.9                6.8 +/-    1.92      16.2 +/-    1.92  0.050 / 0.060
G10     64.8           57.7                5.1 +/-    0.50       5.9 +/-    0.50  0.180 / 0.210
G11     311.3          17.0                4.3 +/-    2.56      10.1 +/-    2.56  0.230 / 0.250
G14     266.6          64.1                5.4 +/-    0.84       6.0 +/-    0.84  0.020 / 0.030
G18     311.7          32.5                4.9 +/-    2.12       8.2 +/-    2.12  0.030 / 0.040
G21     154.9          13.1                4.7 +/-    3.57      12.1 +/-    3.57  0.180 / 0.410
G27     229.7          14.3                5.6 +/-    1.93      14.3 +/-    1.93  0.140 / 0.310
G31     176.4          34.2                6.6 +/-    1.63      10.6 +/-    1.63  0.120 / 0.270
G32     351.3          72.5                5.7 +/-    0.55       5.9 +/-    0.55  0.110 / 0.360