PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/09-22:58:00
G02     200.2          22.8               16.8 +/-    2.96      34.4 +/-    2.96  0.190 / 0.220
G06     173.8          52.7               13.9 +/-    1.00      17.0 +/-    1.00  0.210 / 0.270
G13     225.2          12.3               14.9 +/-    5.66      39.4 +/-    5.66  0.040 / 0.030
G17     25.0           57.7               11.7 +/-    0.85      13.6 +/-    0.85  0.040 / 0.030
G19     327.7          70.9              -12.5 +/-    0.47     -13.1 +/-    0.47  0.240 / 0.390
G24     307.9          31.8               10.1 +/-    1.54      17.0 +/-    1.54  0.140 / 0.480
G28     86.6           42.2               11.6 +/-    0.79      16.3 +/-    0.79  0.050 / 0.040
G30     156.9          12.1               15.0 +/-    3.25      40.0 +/-    3.25  0.040 / 0.040