PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/03/30-01:12:30
G02     203.2          38.2               11.0 +/-    1.76      16.5 +/-    1.76  0.140 / 0.460
G06     158.3          70.7                9.6 +/-    1.08      10.1 +/-    1.08  0.160 / 0.350
G12     308.4          16.0                5.7 +/-    3.32      13.8 +/-    3.32  0.020 / 0.060
G17     34.2           50.9                6.2 +/-    0.53       7.7 +/-    0.53  0.020 / 0.050
G19     4.3            64.3                8.0 +/-    0.95       8.8 +/-    0.95  0.030 / 0.040
G24     296.3          38.7                8.4 +/-    0.66      12.5 +/-    0.66  0.040 / 0.050
G28     104.6          29.5                8.9 +/-    1.10      15.8 +/-    1.10  0.080 / 0.150