PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/04/19-15:12:40
G03     193.9          37.2               13.4 +/-    1.20      20.4 +/-    1.20  0.040 / 0.040
G07     274.3          31.4               12.9 +/-    1.54      21.9 +/-    1.54  0.040 / 0.040
G08     153.6          12.0               12.4 +/-    6.14      33.1 +/-    6.14  0.060 / 0.120
G09     317.3          42.1               10.5 +/-    2.19      14.8 +/-    2.19  0.060 / 0.110
G16     61.7           60.0               11.7 +/-    0.76      13.3 +/-    0.76  0.090 / 0.160
G22     180.4          20.8               11.3 +/-    1.76      24.3 +/-    1.76  0.090 / 0.170
G23     353.8          75.5               11.7 +/-    0.43      12.0 +/-    0.43  0.050 / 0.070
G26     45.3           31.0                9.8 +/-    0.67      16.8 +/-    0.67  0.040 / 0.060
G27     122.1          21.8               13.1 +/-    1.21      27.7 +/-    1.21  0.090 / 0.130