PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/02/07-03:42:50
G02     203.5          37.0                5.1 +/-    0.71       7.7 +/-    0.71  0.060 / 0.310
G06     167.4          67.8                4.1 +/-    0.39       4.3 +/-    0.39  0.160 / 0.210
G12     307.5          14.8               -0.1 +/-    2.90      -0.3 +/-    2.90  0.140 / 0.100
G17     39.5           45.9                2.6 +/-    0.69       3.4 +/-    0.69  0.130 / 0.120
G19     2.2            64.8                2.5 +/-    0.61       2.7 +/-    0.61  0.080 / 0.070
G24     293.0          40.8                5.0 +/-    7.71       7.2 +/-    7.71  0.070 / 0.060
G28     102.5          32.7                4.5 +/-    0.61       7.4 +/-    0.61  0.030 / 0.020