PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/27-08:28:00
G01     318.9          18.2                2.6 +/-    0.83       5.9 +/-    0.83  0.040 / 0.060
G08     259.2          12.9                7.2 +/-    1.78      18.9 +/-    1.78  0.040 / 0.070
G10     80.5           53.0                3.4 +/-    0.65       4.2 +/-    0.65  0.120 / 0.190
G11     303.4          22.7                3.8 +/-    2.35       7.8 +/-    2.35  0.130 / 0.230
G14     287.4          67.9                3.5 +/-    0.51       3.7 +/-    0.51  0.080 / 0.190
G18     304.7          40.0                4.0 +/-    1.57       5.9 +/-    1.57  0.080 / 0.260
G20     109.7          15.6                3.8 +/-    1.65       9.3 +/-    1.65  0.030 / 0.040
G22     301.9          14.0                3.1 +/-    1.44       7.8 +/-    1.44  0.030 / 0.040
G31     173.8          44.5                6.6 +/-    0.98       8.9 +/-    0.98  0.220 / 0.350
G32     12.5           65.9                2.3 +/-    0.45       2.5 +/-    0.45  0.160 / 0.370