PRN     Azimuth(d)     Elevation(d)   Vertical-TEC(tecu)    Slant-TEC(tecu)       S4(L1/L2)    2019/05/12-20:42:50
G02     200.3          22.5               15.3 +/-    3.27      31.7 +/-    3.27  0.050 / 0.070
G06     171.9          54.0               15.0 +/-    0.40      18.1 +/-    0.40  0.070 / 0.070
G13     225.1          12.3               11.2 +/-   15.84      29.6 +/-   15.84  0.100 / 0.130
G17     23.6           58.6               12.6 +/-    0.94      14.5 +/-    0.94  0.080 / 0.130
G19     329.5          70.9               11.5 +/-    0.99      12.1 +/-    0.99  0.240 / 0.150
G24     308.3          31.2               10.7 +/-    2.06      18.2 +/-    2.06  0.300 / 0.280
G28     86.2           42.7               13.7 +/-    0.99      19.1 +/-    0.99  0.040 / 0.030
G30     156.5          11.0               15.4 +/-    2.03      42.1 +/-    2.03  0.050 / 0.030