PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/04/04-11:57:50
G01     319.8          15.7                3.3 +/-    3.74       8.1 +/-    3.74  0.050 / 0.060
G08     264.6          14.3                6.0 +/-    1.50      15.1 +/-    1.50  0.040 / 0.060
G10     75.3           54.9                5.0 +/-    0.44       5.9 +/-    0.44  0.160 / 0.320
G11     307.1          20.2                4.4 +/-    2.74       9.6 +/-    2.74  0.230 / 0.390
G14     282.0          67.7                5.1 +/-    0.63       5.5 +/-    0.63  0.040 / 0.040
G18     307.5          37.4                4.0 +/-    2.29       6.1 +/-    2.29  0.040 / 0.030
G22     300.3          12.2                5.1 +/-    4.94      13.5 +/-    4.94  0.120 / 0.410
G27     225.2          10.1                5.3 +/-    2.24      14.8 +/-    2.24  0.110 / 0.410
G31     175.2          40.6                8.2 +/-    0.89      11.9 +/-    0.89  0.150 / 0.350
G32     5.6            68.4                4.8 +/-    0.40       5.1 +/-    0.40  0.110 / 0.300