PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/16-12:12:50
G01     235.2          25.0                5.6 +/-    1.76      10.9 +/-    1.76  0.060 / 0.100
G03     305.8          60.8                4.3 +/-    0.80       4.8 +/-    0.80  0.060 / 0.100
G14     73.7           35.0                5.2 +/-    0.84       8.2 +/-    0.84  0.030 / 0.030
G16     152.9          34.9                6.1 +/-    1.84       9.7 +/-    1.84  0.030 / 0.020
G18     210.7          15.2                5.0 +/-    1.33      12.3 +/-    1.33  0.150 / 0.210
G22     237.9          76.9                6.0 +/-    0.55       6.1 +/-    0.55  0.150 / 0.160
G23     301.3          33.5                2.3 +/-    1.71       3.8 +/-    1.71  0.030 / 0.030
G26     113.5          50.0                6.7 +/-    0.40       8.5 +/-    0.40  0.040 / 0.040
G31     42.3           40.1                4.5 +/-    1.25       6.5 +/-    1.25  0.080 / 0.110
G32     91.4           11.4                5.5 +/-    1.66      14.9 +/-    1.66  0.090 / 0.100