PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/15-09:12:50
G01     319.5          16.7                3.7 +/-    2.72       8.8 +/-    2.72  0.040 / 0.050
G08     261.4          13.8                5.8 +/-    2.81      14.9 +/-    2.81  0.040 / 0.050
G10     77.5           54.1                4.9 +/-    0.84       5.9 +/-    0.84  0.120 / 0.210
G11     305.2          21.6                5.1 +/-    1.86      10.8 +/-    1.86  0.080 / 0.260
G14     282.1          67.0                5.7 +/-    0.85       6.1 +/-    0.85  0.200 / 0.280
G18     306.4          38.5                4.1 +/-    1.40       6.1 +/-    1.40  0.200 / 0.310
G20     110.1          10.8                3.8 +/-    1.11      10.5 +/-    1.11  0.130 / 0.250
G22     301.1          13.4                1.6 +/-    3.83       4.2 +/-    3.83  0.100 / 0.240
G31     174.4          42.4                6.6 +/-    0.92       9.2 +/-    0.92  0.150 / 0.410
G32     9.0            67.3                4.2 +/-    0.39       4.5 +/-    0.39  0.150 / 0.390