PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2018/05/04-00:27:50
G02     265.5          80.5               12.3 +/-    1.03      12.4 +/-    1.03  0.050 / 0.040
G05     168.7          21.7               17.6 +/-    1.18      37.1 +/-    1.18  0.050 / 0.050
G06     40.0           52.7               11.7 +/-    0.42      14.2 +/-    0.42  0.080 / 0.140
G12     321.1          57.5               12.3 +/-    1.77      14.3 +/-    1.77  0.050 / 0.120
G17     73.6           22.4               11.1 +/-    0.93      23.0 +/-    0.93  0.130 / 0.140
G19     61.6           36.4               12.1 +/-    0.50      18.7 +/-    0.50  0.120 / 0.140
G24     239.9          31.7               14.8 +/-    1.59      25.1 +/-    1.59  0.040 / 0.040
G25     317.4          16.1                9.9 +/-    2.00      23.9 +/-    2.00  0.040 / 0.030