PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/06/30-05:58:10
G01     320.2          14.6              -22.5 +/-   12.21     -56.5 +/-   12.21  0.100 / 0.320
G08     261.7          15.1                4.2 +/-    2.61      10.4 +/-    2.61  0.130 / 0.370
G10     73.4           55.3                3.3 +/-    0.75       3.9 +/-    0.75  0.040 / 0.060
G11     306.6          21.0                3.7 +/-    1.84       7.9 +/-    1.84  0.040 / 0.060
G14     278.5          67.2                2.2 +/-    0.44       2.3 +/-    0.44  0.180 / 0.310
G18     308.2          37.0                2.6 +/-    1.32       4.0 +/-    1.32  0.160 / 0.250
G20     99.7           36.6                5.2 +/-    0.62       8.1 +/-    0.62  0.140 / 0.380
G27     226.7          11.3                4.3 +/-    2.54      11.6 +/-    2.54  0.110 / 0.360
G31     175.0          39.6                5.5 +/-    1.46       8.0 +/-    1.46  0.070 / 0.110
G32     4.0            69.2                3.1 +/-    0.39       3.3 +/-    0.39  0.080 / 0.100