PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/12/13-07:28:10
G02     203.5          34.3                7.2 +/-    0.89      11.5 +/-    0.89  0.070 / 0.090
G06     162.7          68.3                6.6 +/-    0.68       7.1 +/-    0.68  0.080 / 0.090
G12     307.3          15.0                1.9 +/-    1.95       4.7 +/-    1.95  0.100 / 0.300
G17     38.5           46.8                4.0 +/-    0.25       5.3 +/-    0.25  0.150 / 0.350
G19     355.7          66.1                4.0 +/-    0.76       4.3 +/-    0.76  0.030 / 0.030
G24     293.3          41.4                5.5 +/-    0.97       7.8 +/-    0.97  0.040 / 0.040
G28     101.5          32.9                7.8 +/-    0.85      13.0 +/-    0.85  0.070 / 0.130