PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/24-12:28:00
G02     86.2           11.6                5.8 +/-    1.61      15.5 +/-    1.61  0.060 / 0.090
G05     45.0           30.6                1.7 +/-    0.53       2.9 +/-    0.53  0.040 / 0.090
G13     94.3           34.0                6.6 +/-    0.64      10.6 +/-    0.64  0.080 / 0.150
G15     143.2          40.7                6.8 +/-    0.95       9.8 +/-    0.95  0.110 / 0.210
G20     236.5          25.5                4.6 +/-    0.88       8.8 +/-    0.88  0.060 / 0.120
G21     302.5          40.7                4.8 +/-    1.60       6.8 +/-    1.60  0.050 / 0.110
G25     202.2          20.4                2.8 +/-    0.86       6.2 +/-    0.86  0.060 / 0.090
G26     305.0          17.5                3.3 +/-    1.78       7.7 +/-    1.78  0.050 / 0.090
G29     100.3          85.6                3.5 +/-    0.83       3.5 +/-    0.83  0.030 / 0.060