PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/03/16-23:57:50
G01     42.0           17.8               10.1 +/-    2.98      23.5 +/-    2.98  0.170 / 0.140
G06     178.6          32.7               13.1 +/-    1.54      21.6 +/-    1.54  0.220 / 0.320
G13     238.8          23.9               12.3 +/-    2.67      24.7 +/-    2.67  0.040 / 0.050
G15     272.4          13.0                9.0 +/-    1.40      23.4 +/-    1.40  0.040 / 0.050
G17     1.7            71.3               10.6 +/-    0.42      11.1 +/-    0.42  0.060 / 0.090
G19     269.5          67.7               11.3 +/-    0.72      12.1 +/-    0.72  0.060 / 0.080
G24     316.5          19.0                6.6 +/-    2.86      14.9 +/-    2.86  0.040 / 0.040
G28     64.4           50.7               11.3 +/-    0.74      14.2 +/-    0.74  0.040 / 0.030
G30     153.8          29.4               12.5 +/-    1.15      22.2 +/-    1.15  0.070 / 0.100