PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/13-21:58:00
G01     104.7          26.3               12.8 +/-    1.24      24.3 +/-    1.24  0.030 / 0.050
G07     112.5          51.8               12.6 +/-    0.69      15.5 +/-    0.69  0.030 / 0.030
G08     41.5           17.0                8.6 +/-    1.75      20.4 +/-    1.75  0.090 / 0.150
G09     174.8          12.6               12.6 +/-    1.18      33.2 +/-    1.18  0.080 / 0.180
G11     83.8           42.7               12.8 +/-    0.95      17.9 +/-    0.95  0.030 / 0.040
G13     307.6          30.6               12.0 +/-    1.58      20.7 +/-    1.58  0.040 / 0.050
G17     205.5          41.6               13.9 +/-    1.28      19.7 +/-    1.28  0.280 / 0.270
G18     74.8           23.6               11.2 +/-    0.90      22.6 +/-    0.90  0.220 / 0.350
G28     314.4          60.0               10.7 +/-    0.85      12.1 +/-    0.85  0.090 / 0.140
G30     35.6           79.2               12.4 +/-    0.84      12.6 +/-    0.84  0.070 / 0.130