PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-01:13:10
G02     8.0            72.5               10.3 +/-    0.70      10.7 +/-    0.70  0.020 / 0.040
G05     159.1          41.8               15.3 +/-    1.44      21.6 +/-    1.44  0.020 / 0.030
G06     44.0           33.2                8.3 +/-    1.04      13.6 +/-    1.04  0.040 / 0.070
G12     291.0          77.7                9.9 +/-    0.94      10.1 +/-    0.94  0.030 / 0.060
G17     90.6           10.3               10.7 +/-    1.06      29.6 +/-    1.06  0.160 / 0.510
G19     81.2           23.9               11.4 +/-    0.86      22.8 +/-    0.86  0.180 / 0.480
G24     222.9          17.6               14.7 +/-    4.16      34.4 +/-    4.16  0.040 / 0.040
G25     315.6          34.8               10.9 +/-    0.76      17.3 +/-    0.76  0.030 / 0.050
G29     291.3          12.6               12.8 +/-    1.81      33.8 +/-    1.81  0.070 / 0.120