PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/07/04-07:27:50
G01     279.7          41.5                4.2 +/-    1.70       6.0 +/-    1.70  0.050 / 0.060
G03     314.5          23.8                2.9 +/-    2.11       5.9 +/-    2.11  0.040 / 0.070
G10     125.8          22.0                6.3 +/-    2.24      13.2 +/-    2.24  0.050 / 0.060
G11     256.5          22.9                4.6 +/-    1.80       9.4 +/-    1.80  0.040 / 0.060
G14     31.7           55.9                2.9 +/-    0.61       3.5 +/-    0.61  0.100 / 0.160
G18     241.8          43.3                7.3 +/-    0.78      10.2 +/-    0.78  0.110 / 0.120
G22     314.8          47.5                3.0 +/-    1.06       3.9 +/-    1.06  0.090 / 0.090
G25     58.4           18.1                1.8 +/-    0.61       4.2 +/-    0.61  0.060 / 0.110
G31     70.5           76.6                4.8 +/-    0.66       4.9 +/-    0.66  0.090 / 0.240
G32     59.8           34.9                2.9 +/-    0.97       4.5 +/-    0.97  0.090 / 0.320