PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/31-13:58:10
G01     278.3          41.3                6.6 +/-    1.36       9.3 +/-    1.36  0.040 / 0.060
G03     315.3          28.4                5.5 +/-    2.92      10.0 +/-    2.92  0.040 / 0.060
G10     126.5          21.5                9.0 +/-    1.17      19.2 +/-    1.17  0.040 / 0.060
G11     258.0          22.6                3.9 +/-    2.97       8.1 +/-    2.97  0.040 / 0.060
G14     33.1           55.3                5.1 +/-    0.77       6.1 +/-    0.77  0.050 / 0.120
G18     241.6          42.7                9.3 +/-    0.97      12.9 +/-    0.97  0.050 / 0.100
G22     315.1          50.7                5.7 +/-    1.30       7.1 +/-    1.30  0.020 / 0.030
G25     58.1           18.4                5.5 +/-    0.62      12.5 +/-    0.62  0.030 / 0.030
G31     67.9           76.5                6.6 +/-    0.51       6.8 +/-    0.51  0.100 / 0.160
G32     60.4           34.7                5.0 +/-    0.46       7.9 +/-    0.46  0.100 / 0.150