PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/30-23:13:10
G02     226.8          70.0               10.8 +/-    1.10      11.4 +/-    1.10  0.070 / 0.120
G05     173.8          10.6               -3.0 +/-   35.06      -8.3 +/-   35.06  0.060 / 0.100
G06     44.4           68.6               10.5 +/-    0.64      11.2 +/-    0.64  0.100 / 0.390
G12     319.9          41.9               11.0 +/-    1.57      15.5 +/-    1.57  0.150 / 0.300
G17     64.8           26.2                9.9 +/-    0.91      18.8 +/-    0.91  0.030 / 0.040
G19     49.5           42.8               10.9 +/-    1.01      15.2 +/-    1.01  0.040 / 0.040
G24     252.2          38.4               13.7 +/-    1.36      20.5 +/-    1.36  0.040 / 0.070
G28     127.2          10.7               14.0 +/-    2.02      38.4 +/-    2.02  0.050 / 0.060