PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/22-04:43:10
G01     67.1           32.3                5.0 +/-    1.02       8.3 +/-    1.02  0.070 / 0.100
G07     138.9          25.8                7.1 +/-    1.49      13.6 +/-    1.49  0.060 / 0.120
G11     50.5           27.2                2.5 +/-    2.01       4.6 +/-    2.01  0.050 / 0.050
G13     269.9          37.5                4.4 +/-    3.05       6.7 +/-    3.05  0.040 / 0.040
G15     300.9          15.2               -0.5 +/-    2.33      -1.3 +/-    2.33  0.190 / 0.300
G17     242.0          74.7                6.1 +/-    0.44       6.3 +/-    0.44  0.180 / 0.320
G18     44.1           14.1                2.3 +/-    1.81       5.9 +/-    1.81  0.070 / 0.110
G19     226.1          42.8                5.0 +/-    1.81       6.9 +/-    1.81  0.060 / 0.100
G28     20.8           59.4                4.2 +/-    0.75       4.8 +/-    0.75  0.050 / 0.070
G30     138.9          60.2                6.8 +/-    0.30       7.8 +/-    0.30  0.070 / 0.070