PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/25-19:12:50
G01     64.6           31.9               10.4 +/-    1.56      17.6 +/-    1.56  0.080 / 0.180
G07     140.4          26.5               13.8 +/-    0.85      26.0 +/-    0.85  0.090 / 0.150
G11     50.7           27.5                9.2 +/-    2.00      17.0 +/-    2.00  0.070 / 0.130
G13     267.7          36.5               15.1 +/-    1.12      23.3 +/-    1.12  0.080 / 0.140
G15     298.4          15.8               11.1 +/-    1.23      27.1 +/-    1.23  0.040 / 0.040
G17     242.9          70.8               14.9 +/-    0.61      15.7 +/-    0.61  0.040 / 0.040
G18     45.2           15.6                9.8 +/-    1.59      24.1 +/-    1.59  0.050 / 0.100
G19     228.5          45.3               15.2 +/-    1.78      20.4 +/-    1.78  0.050 / 0.090
G28     29.2           57.8               14.3 +/-    0.98      16.5 +/-    0.98  0.140 / 0.260
G30     140.5          55.9               14.0 +/-    0.40      16.6 +/-    0.40  0.080 / 0.350